<script setup>
import { getCategoryFilterAPI, getSubCategoryAPI } from '@/apis/category'
import { useRoute } from 'vue-router'
import { onMounted, ref } from 'vue'
import GoodsItem from '@/views/Home/components/GoodsItem.vue'

const route = useRoute()
// 获取面包屑导航数据
const filterData = ref({})
const getFilterData = async () => {
  const res = await getCategoryFilterAPI(route.params.id)
  filterData.value = res.result
}
onMounted(() => {
  getFilterData()
})

//接收获取的数据参数列表
const goodList = ref([])
// 参数列表
const repData = ref({
  categoryId: route.params.id,
  page: 1, //当前页
  pageSize: 20, //每页显示条数
  sortField: 'publishTime' //排序字段  publishTime（按照时间做一个排序）
})
// 获取商品数据列表
const getGoodList = async () => {
  const res = await getSubCategoryAPI(repData.value)
  // console.log(res)
  goodList.value = res.result.items
}
onMounted(() => {
  getGoodList()
})

//切换tab 发送不同参数请求
const tabChange = () => {
  // console.log('切换了tab', repData.value.sortField)
  // 将页面重置为 第一页
  repData.value.page = 1
  // 切换tab 后 sortField已经发送改变 次数重新发起请求即可
  getGoodList()
}

//列表无限滚动
const disabled = ref(false)
const load = async () => {
  // console.log('加载更多数据咯');
  // 获取下一页数据 page +1
  repData.value.page++
  // 更加新页数重新发起请求
  const res = await getSubCategoryAPI(repData.value)
  // 将老数据与新数据进行拼接  老数据(...goodList.value)  新数据(...res.result.items)扩展运算符
  goodList.value = [...goodList.value, ...res.result.items]
  //加载完毕，停止监听
  if (goodList.value.result.items.length === 0) {
    disabled.value = true
  }
}
</script>

<template>
  <div class="container">
    <!-- 面包屑 -->
    <div class="bread-container">
      <el-breadcrumb separator=">">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <!-- /category/1005000 拼接会居家原来的地址id-->
        <el-breadcrumb-item :to="{ path: `/category/${filterData.parentId}` }"
          >{{ filterData.parentName }}
        </el-breadcrumb-item>
        <el-breadcrumb-item>{{ filterData.name }}</el-breadcrumb-item>
      </el-breadcrumb>
    </div>
    <div class="sub-container">
      <el-tabs v-model="repData.sortField" @tab-change="tabChange">
        <!-- 筛选参数 -->
        <el-tab-pane label="最新商品" name="publishTime"></el-tab-pane>
        <el-tab-pane label="最高人气" name="orderNum"></el-tab-pane>
        <el-tab-pane label="评论最多" name="evaluateNum"></el-tab-pane>
      </el-tabs>
      <div
        class="body"
        v-infinite-scroll="load"
        :infinite-scroll-disabled="disabled"
      >
        <!-- 商品列表-->
        <goods-item
          v-for="goods in goodList"
          :key="goods.id"
          :goods="goods"
        ></goods-item>
      </div>
    </div>
  </div>
</template>

<style lang="scss" scoped>
.bread-container {
  padding: 25px 0;
  color: #666;
}

.sub-container {
  padding: 20px 10px;
  background-color: #fff;

  .body {
    display: flex;
    flex-wrap: wrap;
    padding: 0 10px;
  }

  .goods-item {
    display: block;
    width: 220px;
    margin-right: 20px;
    padding: 20px 30px;
    text-align: center;

    img {
      width: 160px;
      height: 160px;
    }

    p {
      padding-top: 10px;
    }

    .name {
      font-size: 16px;
    }

    .desc {
      color: #999;
      height: 29px;
    }

    .price {
      color: $priceColor;
      font-size: 20px;
    }
  }

  .pagination-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
  }
}
</style>
